Frontmatter -- Contents -- Part I: The phenomenon and the theoretical -- background -- Chapter 1. An introduction to vowel harmony -- Chapter 2. Optimality Theory and the formalisation -- of harmony -- Chapter 3. Cyclicity and phonological opacity as -- constraint coordination and positional faithfulness -- Part II: Case studies -- Chapter 4. Edge effects and positional -- integrity -- Chapter 5. Vowel transparency as balance -- Chapter 6. Trojan vowels and phonological -- opacity -- Chapter 7. General conclusion -- Backmatter